Sedimentation Influence on Magnetorheological Brake Torque Moment

Vėžys, Joris; Mažeika, Darius; Kandrotaitė-Janutienė, R.; Dragašius, Egidijus; Kilikevičius, Artūras; Коробко, Е. В.

doi:10.1007/s11223-018-9979-4

Cited by 8 publications

(6 citation statements)

References 24 publications

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“…Due to the necessary longtime storage of MRFs in many applications, it is important to understand the effect of sedimentation on MRF performance. Vėžys et al [ 69 ] determined the effect of the sedimentation of industrial MRFs on the torque moment of magnetorheological brakes. Sedimentation studies were performed by measuring the electrical resistivity between the top and bottom of the fluid, with the difference in resistance between the sensors directly proportional to the degree of sedimentation.…”

Section: Ci‐based Mrfsmentioning

confidence: 99%

Performance and Stability of Magnetorheological Fluids—A Detailed Review of the State of the Art

Thiagarajan

Koh

2021

Adv Eng Mater

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Magnetorheological fluids (MRFs) are functional materials, prepared by dispersing magnetic particles in a nonmagnetic carrier fluid, that exhibit a change in mechanical properties (e.g., increase in viscosity and yield stress) when subjected to a magnetic field. Change in mechanical properties is demonstrated by a fast (i.e., fraction of milliseconds) and reversible transition from a liquid‐ to a solid‐like state. This transition, due to a structural reorganization of magnetic particles in the carrier fluid, makes MRFs a valuable material for damping, breaking systems, medical and prosthetics, and robotics. Since the discovery of MRFs in 1948, developing MRF preparation methods that result in improved performance and the storage without oxidation and settling is paramount. This article presents a review on recent developments in the preparation process of MRFs with a special emphasis on the state of the art in additives and coatings used in enhancing MRF chemical, colloidal, and thermal stability. Recent advances in MRF materials and formulations that have increased yield stress and magnetic properties are discussed. Finally, this review analyses the present‐day challenges in MRF research and makes suggestions for the field to improve MRF stability and performance drawing on previous MRF work and work outside of the fields.

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Section: Ci‐based Mrfsmentioning

confidence: 99%

Performance and Stability of Magnetorheological Fluids—A Detailed Review of the State of the Art

Thiagarajan

Koh

2021

Adv Eng Mater

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“…Hence, the history of pallets was known and recorded in a WMSindependent database system by tagging them with an information vector (Figure 13). Possible solutions were also analyzed among the effects of works [50][51][52].…”

Section: Prototype Testingmentioning

confidence: 99%

“…Hence, the history of pallets was known and recorded in a WMS-independent database system by tagging them with an information vector (Figure 13). Possible solutions were also analyzed among the effects of works [50][51][52]. The information vector data was expressed in GS-1 128 code symbology, in the "B" coding set, using the (IZ) [53] standard application identifier.…”

Section: Prototype Testingmentioning

confidence: 99%

Energy Consumption When Transporting Pallet Loads Using a Forklift with an Anti Slip Pad Preventing Damage

2021

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A large number of processes for transporting and handling palletized goods using a forklift in logistics centers is usually associated with an increase in pallet and load damage. Therefore, first of all, the “damage mechanism” was identified. A classic “state of the art” analysis was conducted. The paper presents the essence of the authors’ hybrid idea of:—locking the load;—while increasing the coefficient of friction between the pallet and the forks of the forklift; but so as not to compromise on the existing functionality of the forklift forks. The idea turned out to be an innovation that required intellectual property protection, hence it was not only described in a paper but also patented. It is about an extra element that is not standard on forklifts—a forklift fork attachment. The paper discusses mechanical damage to loads involving a forklift, load damage test results, anti-slip forklift attachment, computational model of the attachment, prototype, and real-world testing of the attachment on a forklift in a logistics center. Design data from the FEM calculation system, photos of:—the prototype with components,—the prototype on tests in the logistics center were made available. The paper concludes with a pallet and load damage study performed at a logistics center and an insulation panel factory. The level of accuracy of the publication is detailed enough that the reader can make the attachment on their own and, using the content of the paper, adapt it to the needs of their own logistics system.

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“…Most of the monitoring methods proposed for MR fluid sedimentation were carried out in the laboratory, and the MR fluid was enclosed by a non-magnetic tube, which is favorable for MR fluid preparation and optimization, but it is futile when we hope to investigate the MR fluid which services an actual device such as a damper or clutch. Vezys et al (2018) developed a method for sedimentation sensing in a MR brake via resistivity measuring, in which the MR fluid sedimentation is characterized with the magnetic field strength and the time of standing still, but failed to correlate the resistivity with the concentration of MR fluid. Gillet et al (2020) proposed a novel method to track the degradation of an MR clutch by correlating the clearness percentage of MR fluid with the established durability metric of "life dissipated energy" (LDE), where the clearness of MR fluid is sensed by an optical red green blue sensor.…”

Section: Introductionmentioning

confidence: 99%

In-situ Capacitance Sensing for the Settlement of Magnetorheological Fluid: Simulation and Experiments

Zhang

Zou²,

An³

et al. 2021

Front. Mater.

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In light of the insurmountable sedimentation of magnetorheological (MR) fluid, it is of great significance to ensure the performability of an MR damper by introducing a sensing method for MR fluid settling, and a key indicator to identify the health status of the MR damper is critical. However, the settling monitoring system for MR fluid can nowadays only function in a laboratory with transparent and non-magnetic tubes, which is not qualified for the in-situ sensing in a steel-made cylinder. Under the analysis of an open plate capacitor (OPC) configuration, the relationship between the concentration of magnetorheological fluid and the capacitance is investigated by simulation and experiments, and based on OPC, an in-situ sensing method for the settlement monitoring of magnetorheological fluid is designed. Long-time settling monitoring is carried out with home-made MR fluids, and the test results show that the sensing method can effectively reflect the status of settled MR fluids, and has the potential to be utilized in the identification of MR fluid compression points, which provides the strategic signal for the probable active or operational re-dispersing of MR fluid.

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Sedimentation Influence on Magnetorheological Brake Torque Moment

Cited by 8 publications

References 24 publications

Performance and Stability of Magnetorheological Fluids—A Detailed Review of the State of the Art

Performance and Stability of Magnetorheological Fluids—A Detailed Review of the State of the Art

Energy Consumption When Transporting Pallet Loads Using a Forklift with an Anti Slip Pad Preventing Damage

In-situ Capacitance Sensing for the Settlement of Magnetorheological Fluid: Simulation and Experiments

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